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    <title>RGraph demo: A dual color clickable filled range Line chart</title>
    
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    <meta name="description" content="A range Line chart which shows two colors - the threshold of which is settable" />
     
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    <h1>A dual color clickable filled range Line chart</h1>
    
    <p>
        By using the Poly drawing API object with a filled range chart you can make the filled range clickable.
    </p>

    <canvas id="cvs" width="600" height="250">[No canvas support]</canvas>


    <script>
        window.onload = function ()
        {
            var line = new RGraph.Line({
                id: 'cvs',
                data: [
                    [3,4,6,5,2,4,5,5,6,8,7,4,8,9,8,6,5,2,5,4],
                    [12,13,15,16,12,13,15,14,21,22,20,13,15,16,18,19,16,15,13,18]
                ],
                options: {
                    filled: true,
                    filledRange: true,
                    fillstyle: 'red',
                    colors: ['black'],
                    linewidth: 1,
                    numxticks: 19,
                    ymax: 50,
                    tickmarks: null,
                    backgroundGridAutofitNumvlines: 19,
                    textAccessible: true,
                    scaleZerostart: true
                }
            }).trace(null, drawPoly);


            function drawPoly ()
            {
                /**
                * Extract the coords from the Line chart coords
                */
                var coords = [];
                for (var i=0; i<(line.coords.length / 2); i+=1) {
                    coords.push(line.coords[i]);
                }

                for (var i=(line.coords.length - 1); i>=(line.coords.length / 2);i-=1) {
                    coords.push(line.coords[i]);
                }

                var poly = new RGraph.Drawing.Poly({
                    id: 'cvs',
                    coords: coords,
                    options: {
                        strokestyle: 'rgba(0,0,0,0)',
                        fillstyle: 'rgba(0,0,0,0)',
                        tooltips: ['The tooltip!'],
                        highlightFill: 'rgba(255,255,255,0.5)'
                    }
                }).draw();
            }
        };
    </script>







    <p></p>

    This goes in the documents header:
    <pre class="code">
&lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.common.core.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.common.dynamic.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.common.tooltips.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.common.effects.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.drawing.poly.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.line.js"&gt;&lt;/script&gt;
</pre>
    
    Put this where you want the chart to show up:
    <pre class="code">
&lt;canvas id="cvs" width="600" height="250"&gt;
    [No canvas support]
&lt;/canvas&gt;
</pre>

    This is the code that generates the chart:
    <pre class="code">
&lt;script&gt;
    window.onload = function ()
    {
        var line = new RGraph.Line({
            id: 'cvs',
            data: [
                [3,4,6,5,2,4,5,5,6,8,7,4,8,9,8,6,5,2,5,4],
                [12,13,15,16,12,13,15,14,21,22,20,13,15,16,18,19,16,15,13,18]
            ],
            options: {
                filled: true,
                filledRange: true,
                fillstyle: 'red',
                colors: ['black'],
                linewidth: 1,
                numxticks: 19,
                ymax: 50,
                tickmarks: null,
                backgroundGridAutofitNumvlines: 19,
                textAccessible: true,
                scaleZerostart: true
            }
        }).trace(null, drawPoly);


        function drawPoly ()
        {
            /**
            * Extract the coords from the Line chart coords
            */
            var coords = [];
            for (var i=0; i&lt;(line.coords.length / 2); i+=1) {
                coords.push(line.coords[i]);
            }

            for (var i=(line.coords.length - 1); i>=(line.coords.length / 2);i-=1) {
                coords.push(line.coords[i]);
            }

            var poly = new RGraph.Drawing.Poly({
                id: 'cvs',
                coords: coords,
                options: {
                    strokestyle: 'rgba(0,0,0,0)',
                    fillstyle: 'rgba(0,0,0,0)',
                    tooltips: ['The tooltip!'],
                    highlightFill: 'rgba(255,255,255,0.5)'
                }
            }).draw();
        }
    };
&lt;/script&gt;
</pre>



    

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